diff --git a/x.py b/x.py
index 03300f3..a0f3116 100755
--- a/x.py
+++ b/x.py
@@ -394,6 +394,7 @@ def generate_stackbrew_library():
         if args.rust:
             rust_version = args.rust
             stable = Channel("stable", rust_version)
+            supported_channels[0] = stable
             write_versions(rust_version, rustup_version)
 
         if args.rustup: